I am a guitar player but also a rec. engineer. I have 3 acoustics and a 6-string banjo, so keeping them always record-ready is an issue for my budget.
These strings are amazing for the money, nice intonation and sound, not too bright, not too mellow and without that tin-like random resonances that D'Addario's have.
The alloy is not that typical and the strings also work on electric guitars (better than other string brands), something useful when tracking piano-like el. guitar parts.
Cons...well, the feel is slightly more sticky than some other brands, but I always use string conditioners so that's not a problem for me.
This was the second bunch I bought and there will be more to come.